<!DOCTYPE html>
<html>

<head>
    <title>Example</title>
    <style type="text/css">
        :enabled {
            border: thin red solid;
            padding: 4px;
        }
    </style>
</head>

<body>
    <textarea>This is an enabeld textarea</textarea>

    <textarea disabled>This is an disabeld textarea</textarea>
</body>

</html>